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Polynomials

CBSE 2026 Board Exam Set 2 (Code 30/1/2)

CBSE_BOARD_PYQ_2026_30_1_2

Grade 10

Question:

[Section A]

If one zero of the quadratic polynomial $x^2 + 3x + k$ is $2$, then the value of $k$ is:

(A) $10$
(B) $-10$
(C) $-7$
(D) $-2$

Step-by-Step Solution

Key Concept: $p(2) = 0 \Rightarrow 4 + 6 + k = 0 \Rightarrow k = -10$.

Sol. (B) $-10$. [1.0 Mark]

Correct Answer: (B) $-10$

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